Which of the following descriptions of chain networking in Mesh networking is incorrect?

SD-WAN, like Internet and MPLs , is a pipeline service provided by operators to enterprises.

During installation, AP devices must have their actual installation locations uploaded to iMasterNCE-Campus for efficient subsequent operation and maintenance, as well as for providing value-added services based on terminal location. AP device information can be entered and uploaded using the CloudCampus app.
In addition to the above functions, which of the following functions does the CloudCampus app support?

In the Cloudcampus public cloud deployment scenario, APs are centrally managed and configured by the cloud management platform. The wireless tuning algorithm works by detecting and collecting radio frequency and interference information from surrounding neighbors through the AP, and then reporting it to the cloud management platform for centralized tuning calculation. After the cloud management platform completes the calculation, it sends the channel and power allocated to each AP to the corresponding AP.

When designing a WLAN, which frequency should be selected for the 2.4 GHz band?